The Tris Tigris-Hidraulic War (3250-3256 a.a.H) or Second World War of Aiers was an armed conflict fought between the Tris Tigris Alliance and the Hidraullic Alliance, which will drag into the conflict the MW -Moziepolitischenmilitarischenindustrialen Wosta- and some formerly unaligned states. -being many regional conflicts as the Hettichslovakian wars related to the Tris Tigris-Hidraullic war-
The Hidraullic Alliance was founded by the Kingdom of Ruhenia in the 3243 a.a.H, incorporated states such as Christophenia, Pamelia, Marcelooneo, Moritania, the Calintropian Empire, Östria, Südchristophenia and Slavkinia, being later expanded to more nations.
The Tris Tigris alliance -Alliance of the Three Tigers- was originally a pact signed by Bazikstan, Münzen and Gofondria against the expansion and acts of the Hidraulic Alliance, with the Guaderians as observers of the treaty and later joining several nations bounded in several ways with Bazikstan or Gofondria.
The war will end with the defeat and disolution of the Tris-Tigris alliance: but an uneasy, unfinished peace: the next year Christophenia and Bazikstan will fight again in the "Five Days war" (3257) and the the Hidraullic-Guaderian war (3258): as well, later the winners will break apart, as during the Calintropian-Christophenian War (3263): precisely the collapse of the winning alliance will provide peace, as finally formal peace treaties were signed.